What is the GM 2.8L, 3.5L, 3.7L, 4.2L Exhaust Manifold Repair Kit?
The GM 2.8L, 3.5L, 3.7L, 4.2L Exhaust Manifold Broken Bolt Stud Repair Kit, along with every other USA-made ProMAXX Tool solution, greatly reduces repair times, allowing professional vehicle technicians and skilled mechanics to quickly make the fix and move on to other jobs. The kit is easy to use, and it comes with instructions and schematics that show the best ways to mount the guide plate and use the included drill bit tooling to get at every broken bolt on the manifold.
Make the Broken Bolt Repair Fast…ProMAXX Fast!
With a focus on book time saved, return on investment, and increased productivity, experienced technicians and mechanically adept individuals who follow the provided instructions can use these kits to make the fractured stud repair in approximately 15 minutes per bolt. A professional-grade drive ratchet is required to make the repair.
How does the GM 2.8L, 3.5L, 3.7L, 4.2L Broken Bolt Repair Kit work?
Like all ProMAXX Tool broken bolt repair kits, the GM 2.8L, 3.5L, 3.7L, 4.2L Engine Exhaust Manifold Broken Bolt Stud Repair Kit stands out for its exclusive screw-in bushings and proprietary mating angles, which ensure perfect alignment of the ProPlate jig with the cylinder head. The ProPlate can be bolted in any position with included precision fasteners, providing unparalleled repeatable and predictable results.
This level of accuracy and precision sets the kit apart from other products on the market, which rely on inexpensive clamps or loose slip-fit bushings. The accuracy allows the user to drill dead-center on the bolt hole.
For previous repair attempts or botched repairs, the ProKit’s larger plate holes provide the use of a thread repair kit that includes bushings, bits, and black-oxide coated threaded inserts to restore the cylinder head to factory condition.
Premium Machine-Shop Grade Drill Bit Tooling Included
ProMAXX Tool’s USA-made machine-shop-grade tooling bits are ground at 135° cutting angle (lip) with a split point. Flat ground bits cut slower and are long lasting but less accurate and will walk while drilling.
Split point ground bits will stay on center to reduce walking because they have four cutting edges and distribute loads better. They work well on curved shapes and alloy and stainless steels because it creates smaller chips to minimize clogging holes and breaking bits.
To prevent drill bit breakage, closely follow the instructions in the Exhaust Manifold Repair Kit User Guide.
How To Remove Broken Tap in Manifold Bolt Hole, Repair Threads to NEW VIDEO
How To Remove Broken Exhaust Manifold Bolts Using the GM 2.8L, 3.5L, 3.7L, 4.2L Stud Repair Kit
The steps to use the GM 2.8L, 3.5L, 3.7L, 4.2L Repair Kit are detailed in the Exhaust Manifold Repair (EMR) manual. The manual provides a step-by-step guide on how to mount the ProPlate to the cylinder head, how to insert the ProBushing and ProDrill into the ProPlate, how to set the cutting edge, and how to extract the remnant or go Extractorless™ and drill the bolt out entirely. In the case of extraction or tap failure, ProMAXX Tool provides free 24/7 technical support at 724-941-0941.
Exhaust Manifold Bolt GM 2.8L, 3.5L, 3.7L, 4.2L Key Success Drivers
Fastest — ProKit Plus version includes interchangeable bushings with fasteners and Extractorless™ capabilityEasiest — simple to bolt on and make the repairSmallest — easily fits behind the shock towerMost Precise — engineered .001” accuracy, .0001” dead flatVersatile — Unique CNC machined thread repair kit available as wellBolts to either top or bottom for ultimate versatility and accuracy
Can reduce repair times from 3-4 hours to under 40 minutes
Increase service ledger profitability
Dead flat tolerances of +/-.001”
Tooling Meets Federal Aerospace Specifications; Rc 55 capable
Patented and Made in U.S.A.
